Door closer



Nav.. 2o, 1928.

R. S. POTTER v DooR CLOSER 'Filed April 2.2,v 1925 l Guang@ PatentedNov. 20, 1928.

UNITED 'STATES PATENroFF-Ic.

ROBERT s.

- MANUFACTURING COMPANY,

POTTER, OF GREENWICH, CONNECTICUT, ASSIGNOR T THE YALE & TOWNE OFSTAMFORD, CONNECTICUT.

DOOR CLOSER.

Application led April 22, 1925. Serial No. 255087 I This inventionrelates to improvements in door closers and more particularly to. meanscooperable therewith to hold the door 1n open position,-one object ofthe invention being a to provide simple and efficient means whereby aholding member may be adjustably located with relation to a membercarried by the lever arm, and secured in'adjusted position to hold thedoor open to any desired extent..

A further object is to avoid theapplication of ya stop or holdingmember' to a band adjustable relatively to the closer casing or itscover, but to utilize the cover itself as the carrying ymember for thestop or kholding member, and to provide readily accessible l means foranchoring the casing cover to the casing and yetpermit the said cover tobe adjusted-on the casing to adjust the position ofthe stop or holdingmember.

Vitlrtliese and other objects in View, the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claims.

In the accompaning drawings,-

Figure 1 is a plan View of a door stop showing the application of myimprovements thereto.

Figure 2 is a sectional view.

Figure 3 is a view partl in elevation and partly in section taken atright angles to Figure 2.

Figure 4 is a view in elevation illustrating'l the clamping band and themanner in which ff the saine is anchored to the closer casing, and

Figure 5 is a detail perspective view of al band sect-ion.

In the drawings, 1 represents the casing of a door closer and 2 thecover thereof,-said W cover having a peripheral flange 3. to surroundthe recessed upper end of the casing and said flange is provided with acircumferential groove 4 for a purpose which will be hereinafterexplained. The covei' 2 has a central opening for the accommodation ofthe spindle 5 of the closer and for the accoinmodation of devicesbetween said spindle and the lever arm 6. The lever arm 6 is intendedfor connection with a door in any approved manner and the devicesbetween this lever arm and the spindle form no part of my presentinvention and may be of any well known or approved construction.

A block 7 is permanently located upon the cover 2 and is provided with atenon 8 to enter a socketin the cover,-said block or holding. memberbeing provided centrally with a curved notch or recess 9 and atrespective sides of this notch or recess, the upper face of the block ismade convex or inclined as shown at 10. The lever arm 6 is made with avertical opening 11 through which a plunger 12 is vertically movable. Y.This plunger is iecessed in its lower portion for the accommodation of aroller 13, the journals of which are mounted in tlie plunger atrespective sides of said recess. Plunger 12 is so located that therollerinay run u 'Jon the cover 2 and engage the holding mem er 7. YAspring 14 carried by the lever arm engages under lugs 141 and enters anotch 15 in the plunger 1,2 and operatres to press lthe latterdownwardly. `The tension` of this spring may be adjusted by a set-screw16 or in any other suitable manner.

A clamping band 17 surrounds the flange 3 1 of the cover and is seatedin the groove 4 in said iange. This clamping band comprises7 in additionto the main portion thereof, a section 18. Respective ends of the mainportion of the clamping band are provided with lugs or ears 19 and therespective ends of the band section 18 are provided with lugs or ears 20which are disposed parallel with the lugs or ears 19. The lugs or ears19 are provided with holes for the passage of clamping screws 21, thethreaded portions of which are screwed through the holes in the lugs orears 2() of the band section 18. .The band section 18 is provided withdepending7 spaced lugs 22 which receive'between them a lug or projection23 on the case 1.

It is apparent that when the door is opened, the roller 13 of theplunger 12 will will engage in the notched holding block or .member 7and thus hold the door in open position. In order that the door may beheld open to any desired extent, adjustment of the holding member mustbe provided for. In the present instance, such adjustment may bereffected by'turning the cap or cover 2. Normally the cap or cover isprevented from being turned by the clamping band and its anchorage tothe casing. When it is desired to adjust the cover and hence the holdingblock, one or both of the screws 21 will be loosened to release thecover from the clamping action of the band. The cover may now be readilyturned to adjust the position of the notched holding member. When suchadjustment shall have been effected, the band may be lon IHS

llU

again tightened or clamped to the flange of the cover by tightening thescrew` or screws 21 and as said band, thus clamped to the flange ofthecover, is anchored to the casingso `that it can have no rotativemovement, the cover`I will be firmly held in the position to which itmay have been adjusted. The clamping,

screws for the band are always located in the same positions and are..readily acoessibler Having fully described my invention what I claim asnew and desire tosecure by Letters Patent, is:

l; The combination with the casino', cover and lever arm of a doorcloser, ofa holding r member carried directly by the cover, an en-4clamping band operable to clamp saidcover to the casing said clampingband comprising a main portion andan inserted section, means foradjustably connecting said main portion and inserted section of saidfclamping band,

and means for anchoringsaid inserted section .of @the clamping band tmthe casing.

3., T he combination with the casing, cover and lever armof a doorcloserof` a holding member carried directly by the4 cover, an engagingmember carried by the lever arm for cooperation with said holdingmember, a sectional clamping band for said cover, means fori adjustablyConnecting said sections, spaced lugs on one of said sections, and alufr on the.` casing` to enten between the spaced `lugson thebandsection `to anchor the clampingbandlto the casing; Y 1

4. rIhe combination; with a casing, cover andlever arm of a door closer,saiduleverarm .havingflugs onitsitop between its ends, of'a holding..member carried bv an adjustable part on the casing, a; vertically.movable plunger carried by .the lever arml and; cooper able with saidholding member, a spring disposed on the lever arm and paSsingu-ndenthelugs thereon, one end portion! of saidspr-ing engaging said plunger, andl an` adjusting screw passing upwardly; through the` lever arm andengagingv the opposite endportion of said spring.

In testimony whereeof, I have signed this i specification.'

Roemer s. POTTER;

